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Submission #1105992

# Submission time Handle Problem Language Result Execution time Memory
1105992 2024-10-28T16:13:38 Z doducanh Park (BOI16_park) C++14
100 / 100
 613 ms 89432 KB 
///breaker
#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define int long long
#define double long double
#define fi first
#define se second
#define ii pair<int,int>
#define mp make_pair
#define in(x) freopen(x,"r",stdin)
#define out(x) freopen(x,"w",stdout)
#define bit(x,i) ((x>>i)&1)
#define lc (id<<1)
#define rc ((id<<1)^1)
const int maxn=4005;
const int maxm=1e5+7;
int sz[2*maxm];
int r[2*maxm];
bool ok[maxm][4];
struct tree
{
    int fi,se,r;
}a[maxn];
struct nguoi
{
    int id,r,e;
}b[maxm];
struct edges
{
    ll dodai;
    ii a,b;
    bool operator <(const edges &b){
        return dodai<b.dodai;
    }
};
int n,m,w,h;
vector<edges>ed;
long long dis(int x1,int y1,int x2,int y2)
{
    return sqrt(1ll*(x2-x1)*(x2-x1)+1ll*(y2-y1)*(y2-y1));
}
void add(int x1,int y1,int x2,int y2,int r1,int r2)
{
    long long dist=dis(x1,y1,x2,y2)-r1-r2;
    ii a={x1,y1};
    ii b={x2,y2};
    ed.push_back({dist,a,b});
}
int Find(int u)
{
    return ((u==r[u])?u:r[u]=Find(r[u]));
}
map<ii,int>cc;
bool ans[maxm][4];

void Union(int a,int b)
{
    a=Find(a);
    b=Find(b);
    if(a==b)return;
    if(sz[a]<sz[b])swap(a,b);
    sz[a]+=sz[b];
    r[b]=a;
}
void sol(void){
    cin>>n>>m;
    cin>>w>>h;
    for(int i=1;i<=n;i++){
        cin>>a[i].fi>>a[i].se>>a[i].r;
        cc[(ii){0,a[i].se}]=3;
        cc[(ii){a[i].fi,h}]=2;
        cc[(ii){w,a[i].se}]=1;
        cc[(ii){a[i].fi,0}]=0;
        add(a[i].fi,a[i].se,0,a[i].se,a[i].r,0);
        add(a[i].fi,a[i].se,a[i].fi,h,a[i].r,0);
        add(a[i].fi,a[i].se,w,a[i].se,a[i].r,0);
        add(a[i].fi,a[i].se,a[i].fi,0,a[i].r,0);

    }
    int cnt=4;
    for(int i=1;i<=n;i++){
        cc[(ii){a[i].fi,a[i].se}]=cnt++;
        for(int j=i+1;j<=n;j++){
            add(a[i].fi,a[i].se,a[j].fi,a[j].se,a[i].r,a[j].r);
        }
    }
    for(int i=0;i<=maxn;i++){
        r[i]=i;
        sz[i]=1;
    }
    for(int i=1;i<=m;i++){
        cin>>b[i].r>>b[i].e;
        b[i].e--;
        b[i].r=2*b[i].r;
        b[i].id=i;
    }
    sort(b+1,b+m+1,[&](const nguoi &a,const nguoi &b){
         return a.r<b.r;
    });
    for(int i=1;i<=m;i++){
        for(int j=0;j<4;j++){
            ok[i][j]=1;
        }
    }
    sort(ed.begin(),ed.end());
    int p=1;
    for(auto v:ed){
        while(p<=m&&(double)b[p].r<=(double)v.dodai){
            nguoi curr=b[p];
            bool con[4][4];
            for(int i=0;i<4;i++){
                con[i][i]=true;
                for(int j=i+1;j<4;j++){
                    con[i][j]=(Find(i)==Find(j));
                    con[j][i]=con[i][j];
                }
            }
            auto check=[&](int x){return con[x][((x-1<0)?3:x-1)];};
            for(int i=0;i<4;i++){
                if(curr.e==i)continue;
                if(check(curr.e)||check(i)){
                    ok[curr.id][i]=0;
                    continue;
                }
                bool ngang=con[1][3];
                bool doc=con[0][2];
                if(curr.e+i==3){
                    if(ngang){
                        ok[curr.id][i]=0;
                        continue;
                    }
                }
                else if(abs(curr.e-i)==2){
                    if(doc||ngang){
                        ok[curr.id][i]=0;
                        continue;
                    }
                }
                else if(doc){
                    ok[curr.id][i]=0;
                    continue;
                }
            }
            p++;
        }
        Union(cc[v.a],cc[v.b]);
    }
    for(int i=1;i<=m;i++){
        for(int j=0;j<4;j++){
            if(ok[i][j]){
                cout<<j+1;
            }
        }
        cout<<"\n";
    }
}
signed main(){
    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    int t=1;
    while(t--){
        sol();
    }
    // you should actually read the stuff at the bottom
    return 0;
}
/* stuff you should look for
 * int overflow, array bounds
 * special cases (n=1?)
 * do smth instead of nothing and stay organized
 * WRITE STUFF DOWN
 * DON'T GET STUCK ON ONE APPROACH
 */
//5 3
//16 11
//11 8 1
//6 10 1
//7 3 2
//10 4 1
//15 5 1
//1 1
//2 2
//2 1

Subtask #1
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 545 ms 89040 KB Output is correct
2 Correct 521 ms 89040 KB Output is correct
3 Correct 523 ms 89040 KB Output is correct
4 Correct 525 ms 89080 KB Output is correct
5 Correct 519 ms 89040 KB Output is correct
6 Correct 529 ms 89196 KB Output is correct
7 Correct 494 ms 88776 KB Output is correct
8 Correct 472 ms 89036 KB Output is correct
9 Correct 1 ms 6480 KB Output is correct
10 Correct 1 ms 6480 KB Output is correct

Subtask #2
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 35 ms 7908 KB Output is correct
2 Correct 33 ms 7908 KB Output is correct
3 Correct 41 ms 8836 KB Output is correct
4 Correct 34 ms 8924 KB Output is correct
5 Correct 35 ms 8932 KB Output is correct
6 Correct 37 ms 8928 KB Output is correct
7 Correct 30 ms 8016 KB Output is correct
8 Correct 28 ms 8016 KB Output is correct

Subtask #3
42.0 / 42.0

# Verdict Execution time Memory Grader output
1 Correct 545 ms 89040 KB Output is correct
2 Correct 521 ms 89040 KB Output is correct
3 Correct 523 ms 89040 KB Output is correct
4 Correct 525 ms 89080 KB Output is correct
5 Correct 519 ms 89040 KB Output is correct
6 Correct 529 ms 89196 KB Output is correct
7 Correct 494 ms 88776 KB Output is correct
8 Correct 472 ms 89036 KB Output is correct
9 Correct 1 ms 6480 KB Output is correct
10 Correct 1 ms 6480 KB Output is correct
11 Correct 35 ms 7908 KB Output is correct
12 Correct 33 ms 7908 KB Output is correct
13 Correct 41 ms 8836 KB Output is correct
14 Correct 34 ms 8924 KB Output is correct
15 Correct 35 ms 8932 KB Output is correct
16 Correct 37 ms 8928 KB Output is correct
17 Correct 30 ms 8016 KB Output is correct
18 Correct 28 ms 8016 KB Output is correct
19 Correct 613 ms 89288 KB Output is correct
20 Correct 598 ms 89296 KB Output is correct
21 Correct 568 ms 89292 KB Output is correct
22 Correct 559 ms 89288 KB Output is correct
23 Correct 562 ms 89432 KB Output is correct
24 Correct 486 ms 89040 KB Output is correct